Rockwell Automation 1502 400 Amp Medium Voltage Contactor (Series D) - Manual (Page 39)

Maintenance 4-11
1502-UM050D-EN-P – June 2013
1. Loosen the nuts on the auxiliary assembly retaining bolt. This will require
loosening and removal of the first nut which secures a ground wire at this
location. Leave one nut loosened just enough to permit the assembly to
slide along the adjustment slot as shown in Figure 4.13.
.
Auxiliary Assembly
Retaining Bolt
Auxiliary Assembly
Retaining Bolt
Figure 4.13 – Auxiliary Contact Adjustment
2. Slide the clamping fixture (part number 80154-149-51) over the top of the
armature stop bracket, Figure 4.14. Finger-tighten the two outside fixture
mounting bolts against the armature stop bracket. You may have to push
the armature plate a little to the rear to put the clamp in place.
Contactor Clamping Fixture Contactor Clamping Fixture
Figure 4.14 – Clamping Contactor Closed
. 3. Place a 5/8" wrench on the main shaft of the contactor, pull down and
close the contactor (Figure 4.15) while finger-tightening the top middle
screw on the clamping fixture. (Care should be taken not to bend the
actuator stop plate).